Ah yes, a few bad apples can spoil the bunch. I bet if we turned hiring decisions over to the government, they would weed those bad apples right out. :>

Our government could try to control the culture in a variety of ways: by restricting what we read/see /and hear, or banning unpopular religions, or planting "thought police" who disappear those with express "disloyal" opinions. Do you think it would be good idea to let the government control what we read, or which religion we practice, or disappear those who express disloyal thought?

Ah yes, because some methods of controlling culture are overbearing and intrusive, we shouldn't bother to try at all.

Ironically, failure to control culture at the border - a practice accepted as the right of sovereign nations throughout history, and in every modern nation - increases the need for overbearing and intrusive micromanagement within a nation. And as with all forms of micromanagement, they tend to be inefficient.